@article{VSPUI_2011_3_a10,
     author = {D. V. Koznov},
     title = {On specification of diagram transformations in graphical editors},
     journal = {Vestnik Sankt-Peterburgskogo universiteta. Prikladna\^a matematika, informatika, processy upravleni\^a},
     pages = {100--111},
     year = {2011},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VSPUI_2011_3_a10/}
}